AU2018319331A1 - Device for laminating a substrate with a thermoplastic coating material - Google Patents

Device for laminating a substrate with a thermoplastic coating material Download PDF

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Publication number
AU2018319331A1
AU2018319331A1 AU2018319331A AU2018319331A AU2018319331A1 AU 2018319331 A1 AU2018319331 A1 AU 2018319331A1 AU 2018319331 A AU2018319331 A AU 2018319331A AU 2018319331 A AU2018319331 A AU 2018319331A AU 2018319331 A1 AU2018319331 A1 AU 2018319331A1
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AU
Australia
Prior art keywords
coating material
thermoplastic coating
cooling roller
cooling
roller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
AU2018319331A
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AU2018319331B2 (en
Inventor
Michael Gierlings
Thorsten-Derrick KLOMFASS
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KLOMFASS GIERLINGS & PARTNER GbR
Original Assignee
KLOMFASS GIERLINGS & PARTNER GbR
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by KLOMFASS GIERLINGS & PARTNER GbR filed Critical KLOMFASS GIERLINGS & PARTNER GbR
Publication of AU2018319331A1 publication Critical patent/AU2018319331A1/en
Application granted granted Critical
Publication of AU2018319331B2 publication Critical patent/AU2018319331B2/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/08—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the cooling method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/0046—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by constructional aspects of the apparatus
    • B32B37/0053—Constructional details of laminating machines comprising rollers; Constructional features of the rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/04—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the partial melting of at least one layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B41/00—Arrangements for controlling or monitoring lamination processes; Safety arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2310/00—Treatment by energy or chemical effects
    • B32B2310/08—Treatment by energy or chemical effects by wave energy or particle radiation
    • B32B2310/0806—Treatment by energy or chemical effects by wave energy or particle radiation using electromagnetic radiation
    • B32B2310/0825—Treatment by energy or chemical effects by wave energy or particle radiation using electromagnetic radiation using IR radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2398/00—Unspecified macromolecular compounds
    • B32B2398/20—Thermoplastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2439/00—Containers; Receptacles
    • B32B2439/70—Food packaging
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2555/00—Personal care
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B32B37/1284—Application of adhesive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/14—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers
    • B32B37/16—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating
    • B32B37/20—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the properties of the layers with all layers existing as coherent layers before laminating involving the assembly of continuous webs only
    • B32B37/203—One or more of the layers being plastic

Landscapes

  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Laminated Bodies (AREA)
  • Non-Metallic Protective Coatings For Printed Circuits (AREA)

Abstract

The invention relates to a device for laminating a substrate (4) with a thermoplastic coating material (2), comprising an IR heating device (3) for melting a surface of the coating material, an opposing cooling device (1) which actively cools the opposing surface of the coating material (2), and at least one press roller assembly (5) which presses together the substrate web (4) and the coating material (2) in order to produce a hot melt adhesive connection. The aim of the invention is to prevent irregularities in the finished product. According to the invention, this is achieved in that the cooling device is designed as a rotationally driven cooling roller (1), on the circumference of which the following are arranged one after the other: – a supply device (2a) for the thermoplastic coating material (2); – one or more IR radiant heaters (3) for heating the surface of the thermoplastic coating material (2) lying on the cooling roller (1); – a supply device (4a) for the substrate web (4); – one or more press rollers (5) for pressing the substrate web (4) against the coating material (2); and – a discharge device (6a) for the laminated product (6).

Description

Method for laminating a substrate with a thermoplastic coating material
The invention relates to a method for continuously laminating a substrate with a thermoplastic coating material, comprising an IR heating device, by means of which the surface of the thermoplastic coating material is melted, comprising a cooling apparatus which is opposite the heating apparatus and actively cools the surface of the continuous thermoplastic coating material that is opposite the molten surface, and comprising at least one press-roller assembly, by means of which a continuous substrate web and the continuous thermoplastic film web are pressed together to produce a bond between the substrate web and the thermoplastic material.
The laminates produced using such devices are particularly advantageous for the production of sanitary products, films for food packaging, construction films, agricultural films and other technical laminates, because either no adhesive is used in their production or it is possible to significantly reduce the amount of adhesive used. Non-woven materials are possible in particular as substrates for sanitary products, but woven or knitted textiles and thin foam webs are also possible. For other applications, other substrates made of e.g. thermoplastic plastics materials such as PE, CPP, etc., may also be used.
A device of the type mentioned at the outset is known from DE 10 2013 001 826 A1, for example. In this known device, the cooling apparatus is designed as a stationary cooling plate, over which the continuous thermoplastic film web is guided, and which cools the film web from below, while it is simultaneously melted from above by means of the heating apparatus. One problem with this known device is that the continuous film web is relatively unstable due to the melting of its surface and despite the cooling of its opposite surface. As a result, there is the risk that the tensioned thermoplastic film web will become distorted before it reaches the press-roller assembly, and therefore corresponding irregularities are produced in the end product.
A problem that is similar in principle results in another device that is known according to the prior art (WO 2016/026918A1), which, however, operates with adhesive but likewise provides activation of the surface of the thermoplastic film web to be bonded by melting the surface thereof. In this known device, a supporting conveyor belt that passes around rollers is arranged between the stationary cooling plate and the thermoplastic film to be cooled. However, this supporting conveyor belt significantly impairs the cooling effect of the cooling apparatus and does not sufficiently stabilize the continuous thermoplastic film web in the region in front of the press-roller assembly. Evenly melting the film web is also not as important in this device, because sufficient adhesive can additionally be used.
In order to eliminate the problems caused by the cooling, the device known from EP 3 098 060 A1 attempts to melt the surface of the continuous thermoplastic film web without any cooling of the opposite surface. To make this possible, an IR laser is used here to melt the surface and cooling of the opposite surface is completely omitted. In this device, there is of course also the risk that the tensioned thermoplastic film web, which is melted on its surface and is therefore weakened, becomes distorted before it enters the press-roller assembly. Furthermore, it is not easy to distribute the highly focused energy of one laser beam evenly over the surface of the continuous thermoplastic film web, in particular if it is taken into account that this film web is passing through at speeds of up to 350 m/min. There is thus the risk that irregularities may develop due to differing thermal expansion in the surface region of the film web or that the thermoplastic film web does not sufficiently adhere to the substrate at points.
The problem addressed by the invention is therefore to develop the device of the type mentioned at the outset such that the thermoplastic coating material does not become distorted before entering the press-roller assembly and even adhesion of the thermoplastic coating material to the substrate web is ensured.
In order to solve this problem, proceeding from a device of the type mentioned at the outset, the invention proposes that the cooling apparatus is designed as a rotatably driven cooling roller, over the circumference of which the following are arranged in succession:
- a feed apparatus for the thermoplastic coating material,
- one or more IR radiant heaters for heating the surface of the thermoplastic coating material resting on the cooling roller,
- a feed apparatus for the substrate web,
- one or more press-roller assemblies for pressing the substrate web against the molten surface of the thermoplastic coating material resting on the cooling roller,
- and a removal apparatus for the finished laminated product.
In the device according to the invention, the thermoplastic coating material rests on the surface of the rotatably driven cooling roller over its entire surface, without moving, and thus entirely without tension during the entire period between feeding to the cooling roller and removing the finished laminated product from the cooling roller, such that no distortion or displacement can occur. As a result of the fact that the surface of the thermoplastic coating material can be melted over a comparatively large angular path over the circumference of the cooling roller, very even heating of the surface to be melted can be achieved, even at a high web speed.
It is particularly advantageous if a plurality of press-roller assemblies for pressing the substrate web against the molten surface of the thermoplastic coating material resting on the cooling roller are provided over the circumference of the cooling roller in the rotational direction behind the feed apparatus for the substrate web. As a result, the contact pressure can be gradually increased from one press-roller assembly to the next, which results in an improvement in the adhesive bond.
One expedient embodiment of the device according to the invention provides that the cooling roller is provided with connections for supplying and discharging a fluid coolant. By accordingly temperature-controlling this liquid coolant, it is possible to keep the surface temperature of the cooling roller exactly constant.
It is also expedient if both the melting of the thermoplastic coating material and the pressing of the substrate web against the molten coating material each take place over one half of the cooling roller. This is achieved in that the IR radiant heaters and the press-roller assemblies are each arranged so as to be distributed over one half of the circumference of the cooling roller. As a result, even at a high web speed, there is enough time available for both processes.
In order to further protect the thermoplastic coating material against any unintended displacement on the surface of the cooling roller, it is further provided that fixing devices which fix the side border of the thermoplastic coating material over the circumference of the cooling roller are provided over the circumference of the cooling roller along the side edges of the thermoplastic coating material.
The above-mentioned fixing devices may be designed as clips or guide belts, for example.
If the above-mentioned melt adhesion is not considered sufficient, the feed apparatus for the substrate web can lastly additionally be provided with an adhesive feed.
One embodiment of the invention is described in greater detail in the following on the basis of the drawings, the single figure of which is a schematic section through the device according to the invention.
In the drawings, a cooling roller is denoted by reference sign 1. This cooling roller is provided with connections (not shown) for supplying and discharging a coolant, for example water or oil, and can be kept at a constant temperature of from 5 °C to 40 °C, for example, by means of said coolant.
The cooling roller 1 is rotatably driven in the direction of the rotational arrow x. The following are arranged in succession around the cooling roller in the direction of the rotational arrow x:
- a feed apparatus 2a for a thermoplastic coating material in the form of a film web 2,
- a plurality of IR radiant heaters 3 for heating the surface of the thermoplastic film web 2 resting on the cooling roller 1,
- a feed apparatus 4a for a substrate web 4, it being possible for this feed apparatus 4a to additionally be provided with an adhesive feed apparatus (not shown) if required,
- three press-roller assemblies 5 for pressing the substrate web 4 against the molten surface of the thermoplastic film web 2 resting on the cooling roller 1,
- and a removal apparatus 6a for the laminated product 6, which consists of the substrate web 4 and the thermoplastic film web 2 that has been laminated thereon.
The device according to the invention operates as follows:
The centrally arranged cooling roller 1 is rotatably driven in the direction of the rotational arrow x. The continuous thermoplastic film web 2 is fed to the surface of the cooling roller 1 by means of the feed apparatus 2a. The fed thermoplastic film web 2 is then guided past the IR radiant heaters 3, which are arranged over approximately one half of the circumference of the cooling roller 1, by the rotating cooling roller 1. In the process, the surface of the film web 2 facing the radiant heaters 3 heats up to the melting temperature. By contrast, the surface of the thermoplastic film web 2 resting on the cooling roller 1 does not melt and remains intact. So that the thermoplastic film web 2 cannot become displaced relative to the surface of the cooling roller 1 on its path along the radiant heaters 3, it is fixed in position on the cooling roller on this path by clips located in the region of its side borders (not shown in the drawings).
The substrate web 4 is fed behind the last radiant heater 3 by means of the feed apparatus 4a and is then pressed against the molten surface of the thermoplastic film web 2 resting on the cooling roller 1 by means of the press-roller assemblies 5. The press-roller assemblies 5 are arranged so as to be distributed over the remaining half of the circumference of the cooling roller 1 and increase the generated contact pressure from one press-roller assembly 3 to the next. As a result, the quality of the adhesion is considerably increased.
The removal apparatus 6a for the finished laminated product 6, which, here, is in the form of a continuous product web consisting of the substrate web and the 5 thermoplastic film web laminated thereon, is then located behind the last pressroller assembly 5.

Claims (6)

  1. Claims
    1. Method for continuously laminating a substrate with a thermoplastic coating material (2), comprising an IR heating device (3), by means of which a surface of the thermoplastic, film-shaped coating material (2) is melted, a cooling apparatus (1) which is opposite the IR heating apparatus (3) and actively cools the surface of the continuous thermoplastic coating material (2) that is opposite the molten surface, and at least one press-roller assembly (5), by means of which a continuous substrate web (4) and the continuous thermoplastic coating material (2) are pressed together to produce a hot-melt adhesive bond between the substrate web (4) and the thermoplastic coating material (2), characterized in that the cooling apparatus is designed as a rotatably driven cooling roller (1), over the circumference of which the following are arranged in succession:
    - a feed apparatus (2a) for the thermoplastic coating material (2),
    - one or more IR radiant heaters (3) for heating the surface of the thermoplastic coating material (2) resting on the cooling roller,
    - a feed apparatus (4a) for the substrate web (4),
    - one or more press-roller assemblies (5) for pressing the substrate web (4) against the molten surface of the thermoplastic coating material (2) resting on the cooling roller (1),
    - and a removal apparatus (6a) for the laminated product (6).
  2. 2. Device according to claim 1, characterized in that the cooling roller (1) is provided with connections for supplying and discharging a fluid coolant.
  3. 3. Device according to claim 1 or 2, characterized in that the IR radiant heaters (3) and the press-roller assemblies (6) are each arranged so as to be distributed over one half of the circumference of the cooling roller (1).
  4. 4. Device according to any of claims 1-3, characterized in that fixing devices 5 which fix the side border of the thermoplastic coating material (2) in position when it passes around the cooling roller (1) are provided over the circumference of the cooling roller (1) along the side edges of the thermoplastic coating material (2).
  5. 5. Device according to claim 4, characterized in that the fixing devices are io designed as clips or guide belts.
  6. 6. Device according to any of the preceding claims, characterized in that the feed apparatus (4a) for the substrate web (4) is additionally provided with an adhesive feed.
AU2018319331A 2017-08-25 2018-08-22 Device for laminating a substrate with a thermoplastic coating material Active AU2018319331B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102017119576.9 2017-08-25
DE102017119576.9A DE102017119576A1 (en) 2017-08-25 2017-08-25 Device for laminating a substrate with a thermoplastic coating material
PCT/EP2018/072604 WO2019038311A1 (en) 2017-08-25 2018-08-22 Device for laminating a substrate with a thermoplastic coating material

Publications (2)

Publication Number Publication Date
AU2018319331A1 true AU2018319331A1 (en) 2020-03-19
AU2018319331B2 AU2018319331B2 (en) 2023-01-12

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AU2018319331A Active AU2018319331B2 (en) 2017-08-25 2018-08-22 Device for laminating a substrate with a thermoplastic coating material

Country Status (15)

Country Link
US (1) US11628658B2 (en)
EP (1) EP3526042B1 (en)
JP (1) JP7241077B2 (en)
KR (1) KR102558797B1 (en)
CN (1) CN111132833A (en)
AU (1) AU2018319331B2 (en)
CA (1) CA3073781A1 (en)
DE (2) DE102017119576A1 (en)
DK (1) DK3526042T3 (en)
ES (1) ES2816074T3 (en)
HU (1) HUE051639T2 (en)
MX (1) MX2020002117A (en)
PL (1) PL3526042T3 (en)
PT (1) PT3526042T (en)
WO (1) WO2019038311A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020144043A1 (en) 2019-01-11 2020-07-16 Henkel Ag & Co. Kgaa Method and device for adhesively bonding substrates in film form, and composite body obtained thereby
DE202020102523U1 (en) 2020-05-05 2020-07-06 Klomfass Gierlings & Partner GbR (vertretungsberechtigter Gesellschafter Michael Gierlings,41564 Kaarst) Laminating line
PL3981599T3 (en) * 2020-10-09 2024-05-06 Henkel Ag & Co. Kgaa Device and method for laminating a substrate with a thermoplastic film
EP3981598B1 (en) * 2020-10-09 2023-12-13 Henkel AG & Co. KGaA Device and method for laminating a substrate with a thermoplastic film
CN113858844A (en) * 2021-10-28 2021-12-31 深圳市柯尼达医疗设备有限公司 Antistatic wear-resistant PET medical film

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Also Published As

Publication number Publication date
US11628658B2 (en) 2023-04-18
KR102558797B1 (en) 2023-07-25
ES2816074T3 (en) 2021-03-31
RU2020111959A3 (en) 2021-10-28
CN111132833A (en) 2020-05-08
JP2020535046A (en) 2020-12-03
RU2020111959A (en) 2021-09-27
AU2018319331B2 (en) 2023-01-12
JP7241077B2 (en) 2023-03-16
CA3073781A1 (en) 2019-02-28
EP3526042A1 (en) 2019-08-21
DE102017119576A1 (en) 2019-02-28
DE202017006956U1 (en) 2019-02-26
MX2020002117A (en) 2020-09-18
KR20200051660A (en) 2020-05-13
WO2019038311A1 (en) 2019-02-28
DK3526042T3 (en) 2020-08-31
BR112020003704A2 (en) 2020-09-01
PL3526042T3 (en) 2020-11-30
EP3526042B1 (en) 2020-05-27
PT3526042T (en) 2020-08-13
US20200384751A1 (en) 2020-12-10
HUE051639T2 (en) 2021-03-01

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